If it has a Key start, there will be a Starter relay on or near the starter. This relay might have 4 terminals. one of the small ones will be labeled "I" this terminal should go to the coil side of the resistor if so equipped. Some have an ignition wire from the key to the coil that is a resistor in and of itself. This would then have that I wire connected to the coil directly. (on the terminal not connected to the points) The resistor in a wire type may not be tha case on your tractor, I do not know) if you measure the resistance of the coil with it disconnected) from smapp terminal to small terminal it should be around 2.5 to 3 ohms if 6volt, or 12v for use with a external resistor. If it is a 12v no resistor required, it will measure about 4 to 5 ohms. If it is a failing coil it will have low resistance. (it could be a 12v coil failing and looking like a 6v in resistance. If you measure the voltage at the coil within 1 minute of turning it on (but not starting it), and the points are closed (normally comes to rest in that position) the voltage will read 8 or less if it has an internal resistor, and about 12.3 or more if it does not. Do not leave the key on for more than 2 minutes with it not running, it will heat the coil even if it is the correct coil. Jim
We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]
Today's Featured Article - An Old-Time Tractor Demonstration - by Kim Pratt. Sam was born in rural Kansas in 1926. His dad was a hard-working farmer and the children worked hard everyday to help ends meet. In the rural area he grew up in, the highlight of the week was Saturday when many people took a break from their work to go to town. It was on one such Saturday in the early 1940's when Sam was 16 years old that he ended up in Dennison, Kansas to watch a demonstration of a new tractor being put on by a local dealer. It was an Allis-Chalmers tractor dealership,
... [Read Article]
Latest Ad:
Variable pulley for case 1530 skid loader
[More Ads]
All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy
TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.
